Finding the Fourth Proportional to 2,139,603.51, 3,209,604.39 and 773,719.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139,603.51 : 3,209,604.39 = 773,719.56 : x
2. Step 2: Convert to fraction form
   2,139,603.51/3,209,604.39 = 773,719.56/x
3. Step 3: Cross multiply
   2,139,603.51x = 3,209,604.39 × 773,719.56
4. Step 4: Simplify right side
   2,139,603.51x = 2,483,333,696,404.87
5. Step 5: Solve for x
   x = 2,483,333,696,404.87/2,139,603.51
6. Step 6: Final answer
   x = 1,160,651.35